EP 0913876 A4 20000112 - A METHOD OF PREPARING POSITIVE MATERIAL FOR LITHIUM SECONDARY CELL BY MICROWAVE ENERGY
Title (en)
A METHOD OF PREPARING POSITIVE MATERIAL FOR LITHIUM SECONDARY CELL BY MICROWAVE ENERGY
Title (de)
VERFAHREN ZUR HERSTELLUNG VON POSITIVMATERIAL FÜR LITHIUMSEKUNDÄRZELLE MITTELS MIKROWELLENENERGIE
Title (fr)
PROCEDE DE PREPARATION DE MATERIAUX POSITIFS POUR PILES SECONDAIRES AU LITHIUM AU MOYEN D'ENERGIE MICRO-ONDES
Publication
Application
Priority
- CN 9700039 W 19970504
- CN 96104965 A 19960510
Abstract (en)
[origin: WO9743794A1] The invention relates to a method of preparing positive material for lithium secondary cell by microwave energy. Oxide, hydroxide or salt raw materials of Co, Ni, Mn, Cr, Ti, V, Sc, Fe and Li are weighed in the ratio Li1+xM1-yM' omega O4-z (wherein x = -1 SIMILAR 5, y = -1 SIMILAR 1, omega = 0 SIMILAR 6, z = -8 SIMILAR 3), the raw materials are homogeneously mixed to produce a precursor body, the precursor body is placed in a thermos container capable of being transmitted by microwave, then placed in a microwave oven having microwave frequency of 0.3-300 gigahertz (GHz) and microwave wavelength of 1 mm-1m, and then heat-synthesized for 1 minute-5 hours at 500 DEG C-1000 DEG C, thus there is produced the positive material for lithium secondary cell with the microwave oven cooling. The method saves energy and decreases the loss of lithium in the heat-synthesizing process, so ensures the stability in material component.
IPC 1-7
IPC 8 full level
C01G 45/00 (2006.01); C01G 45/12 (2006.01); C01G 51/00 (2006.01); C01G 53/00 (2006.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/50 (2006.01); H01M 4/505 (2010.01); H01M 4/52 (2006.01); H01M 4/525 (2010.01); H01M 4/58 (2006.01); H01M 10/052 (2010.01); H01M 10/40 (2006.01)
CPC (source: EP)
C01G 45/1221 (2013.01); C01G 45/1228 (2013.01); C01G 45/1242 (2013.01); C01G 45/1257 (2013.01); C01G 45/1292 (2013.01); C01G 51/42 (2013.01); C01G 53/42 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/72 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2006/40 (2013.01); H01M 10/052 (2013.01); Y02E 60/10 (2013.01); Y02P 20/10 (2015.11)
Citation (search report)
- No further relevant documents disclosed
- See references of WO 9743794A1
Designated contracting state (EPC)
DE
DOCDB simple family (publication)
WO 9743794 A1 19971120; CN 1042377 C 19990303; CN 1143267 A 19970219; DE 913876 T1 19990819; EP 0913876 A1 19990506; EP 0913876 A4 20000112; JP H11511290 A 19990928
DOCDB simple family (application)
CN 9700039 W 19970504; CN 96104965 A 19960510; DE 97920486 T 19970504; EP 97920486 A 19970504; JP 54035497 A 19970504